Description and Brand Names

Drug information provided by: Merative, Micromedex®

US Brand Name

  1. Nypozi

Descriptions


Filgrastim-txid injection is used to treat neutropenia (low white blood cells) that is caused by cancer medicines. It is a synthetic (man-made) form of a substance that is naturally produced in your body called a colony stimulating factor. Filgrastim-txid helps the bone marrow to make new white blood cells.

When certain cancer medicines are used to fight cancer cells, they also affect the white blood cells that fight infections. Filgrastim-txid is used to prevent or reduce the risk of infections while you are being treated with cancer medicines. This medicine is also used to help the bone marrow recover after a bone marrow transplantation, for a process called peripheral blood progenitor cell collection in cancer patients.

This medicine is available only with your doctor's prescription.

Before Using

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of filgrastim-txid injection in children. Safety and efficacy have been established in children with severe chronic neutropenia.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of filgrastim-txid injection in the elderly.

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Vincristine
  • Vincristine Sulfate Liposome

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Bleeding problems or
  • Cutaneous vasculitis (skin disorder) or
  • Glomerulonephritis (kidney disease) or
  • Leukocytosis (high white blood cell count) or
  • Lung disease or breathing problems or
  • Sickle cell disease (red blood cell disease) or
  • Thrombocytopenia (low platelets in the blood)—Use with caution. May make these conditions worse.

Proper Use

A nurse or other trained health professional may give you this medicine. It is given as a shot under your skin (usually in the upper arms, stomach, thighs, or buttocks) or through an IV catheter placed into a vein.

You may be taught how to give this medicine at home. Make sure you understand all of the instructions before giving yourself an injection. Use this medicine only as directed by your doctor. Do not use more of it, do not use it more often, and do not use it for a longer time than your doctor ordered. You will also be shown the body areas where this shot can be given. Use a different body area each time you give yourself a shot. Keep track of where you give each shot to make sure you rotate body areas. This will help prevent skin problems from the injections. Do not inject into skin areas that are tender, red, bruised, hard, scaly, or has scars or stretch marks.

This medicine comes with patient information leaflet and patient instructions. Read and follow these instructions carefully. Ask your doctor if you have any questions about:

  • How to prepare the injection.
  • The proper use of disposable syringes.
  • How to give the injection.
  • How long the injection can be stored at home.

Start using the medicine 24 hours or more after you finish your chemotherapy. However, do not use it within 24 hours before you begin another chemotherapy.

Allow 30 minutes for the prefilled syringe to warm up to room temperature. Do not warm using heat sources (eg, hot water, microwave, or sunlight).

Check the liquid in the prefilled syringe. It should be clear and colorless to slightly yellowish. Do not use it if it is cloudy or discolored, or has flakes or particles in it. Do not use it if it is cracked or broken ,or has been dropped. Do not shake.

Do not use the prefilled syringe if the needle guard has been activated.

To use the prefilled syringe:

  • Wash your hands with soap and water before and after using this medicine.
  • Do not twist or bend the gray needle cap. Do not hold the syringe by the plunger rod. Do not put the cap back on.
  • Check the syringe for air bubbles. Point the needle up and gently tap the syringe with your fingers until the air bubbles go to the top of the syringe.
  • Gently pinch the skin. With your other hand, insert the needle into the skin at a 45 to 90 degree angle. Slowly push down on the plunger rod as far as it will go so the plunger head is completely between the needle guard wings. Do not pull back the plunger rod.
  • Slowly release the plunger and allow the needle guard to cover the needle.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For injectable dosage form (solution):
    • For neutropenia:
      • Adults—Dose is based on body weight and must be determined by your doctor. The dose is usually 5 to 10 microgram per kilogram (mcg/kg) of body weight injected under the skin per day. Your doctor may adjust your dose as needed.
      • Children—Use and dose must be determined by your doctor.

Missed Dose

This medicine needs to be given on a fixed schedule. If you miss a dose or forget to use your medicine, call your doctor or pharmacist for instructions.

Storage

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Store in the refrigerator. Do not freeze.

Do not leave this medicine in direct sunlight. You may store the medicine at room temperature for up to 24 hours. Throw this medicine away if it has been left at room temperature for longer than 24 hours.

Throw away used needles in a hard, closed container where the needles cannot poke through. Keep this container away from children and pets.

Precautions

It is very important that your doctor check your or your child's progress at regular visits to make sure this medicine is working properly. Blood and urine tests may be needed to check for unwanted effects.

Check with your doctor right away if you or your child are having pain in the upper left part of the stomach or at the tip of the left shoulder. This could be a symptom of a serious side effect with the spleen.

Check with your doctor right away at the first sign of an infection, including fever, chills, cough, sore throat, or unusual tiredness or weakness.

Check with your doctor right away if you or your child develop a fever, chest pain or tightness, or trouble breathing. These could be symptoms of a serious lung condition called acute respiratory distress syndrome (ARDS).

This medicine may cause serious allergic reactions, including anaphylaxis, which can be life-threatening and requires immediate medical attention. Tell your doctor right away if you or your child has a rash, itching skin, dizziness, lightheadedness, or fainting, swelling of the face, tongue, or throat, trouble breathing, or chest pain after receiving this medicine.

This medicine may cause kidney problems. Call your doctor right away if you or your child has swelling in the face or ankles, blood in the urine, or decrease in how much or how often you urinate.

This medicine may cause bleeding in the lungs. Check with your doctor right away if you or your child cough up blood or have blood in your sputum (spit).

This medicine may cause a condition called capillary leak syndrome. It can cause fluid to leak from the blood vessels into your body's tissues. Call your doctor right away if you have swelling or puffiness and are urinating less often, trouble breathing, feeling of fullness, dizziness, or feeling faint.

This medicine may cause blood or bone marrow problems (eg, myelodysplastic syndrome, acute myeloid leukemia) in patients with breast or lung cancer. Check with your doctor right away if you have chest pain, chills, cough or hoarseness, fever, lower back or side pain, painful or difficult urination, sores, ulcers, or white spots on the lips or in the mouth, swollen glands, unusual bleeding or bruising, or unusual tiredness or weakness.

This medicine lowers the number of some types of blood cells in your body. Because of this, you may bleed more easily. Wash your hands often. Stay away from rough sports or other situations where you could be bruised, cut, or injured. Brush and floss your teeth gently. Be careful when using sharp objects, including razors and fingernail clippers. Check with your doctor right away if you or your child has black or tarry stools, bleeding gums, blood in the urine or stools, pinpoint red spots on the skin, or unusual bleeding or bruising after receiving this medicine.

This medicine may cause aortitis (inflammation of the aorta, the largest artery in the body). Check with your doctor right away if you have fever, stomach pain, unusual tiredness or weakness, or back pain.

Before you have any medical tests, tell the medical doctor in charge that you are using this medicine. The results of some tests may be affected by this medicine.

Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

  1. Arm or leg pain
  2. back pain
  3. black, tarry stools
  4. bladder pain
  5. bleeding gums
  6. bloating or swelling of the face, arms, hands, lower legs, or feet
  7. blood in the urine or stools
  8. body aches or pain
  9. chest pain
  10. chills
  11. cloudy urine
  12. cough
  13. difficult, burning, or painful urination
  14. difficulty in moving
  15. difficulty in swallowing
  16. ear congestion
  17. fast heartbeat
  18. feeling of fullness
  19. fever
  20. frequent urge to urinate
  21. headache
  22. joint pain
  23. loss of voice
  24. lower back or side pain
  25. muscle pain or stiffness
  26. pale skin
  27. pinpoint red spots on the skin
  28. rapid weight gain
  29. skin itching, rash, or redness
  30. stomach pain
  31. stuffy or runny nose
  32. swelling of the face, throat, or tongue
  33. tingling of the hands or feet
  34. trouble breathing
  35. unusual bleeding or bruising
  36. unusual tiredness or weakness
  37. unusual weight gain or loss

Incidence not known

  1. Blisters on the skin
  2. blue lips, fingernails, or skin
  3. bone pain
  4. chest tightness
  5. coughing or spitting up blood
  6. decrease in height
  7. decrease or increase in amount of urine
  8. eye pain
  9. fainting or lightheadedness
  10. general feeling of illness
  11. nausea
  12. pain in the back, ribs, arms, or legs
  13. painful or difficult urination
  14. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  15. sore throat
  16. swelling of the face, feet, or lower legs
  17. swelling of the hands, ankles, feet, or lower legs
  18. swollen glands
  19. ulcers, sores, or white spots in the mouth

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

  1. Bloody nose
  2. burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  3. constipation
  4. decreased appetite
  5. diarrhea
  6. lack or loss of strength
  7. loss or thinning of the hair
  8. muscle spasm
  9. vomiting

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Portions of this document last updated: Aug. 01, 2024

Original article: https://www.mayoclinic.org/es/drugs-supplements/filgrastim-txid-injection-route/description/drg-20571319